JP6640612B2 - Method for producing glass for automobile with member and superheated steam chamber used for production of glass for automobile with member - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a method for producing a glass for a vehicle with a member and a superheated steam chamber used for producing the glass for a vehicle with a member. The present invention relates to a superheated steam chamber used in the production of a steam.

  It is known to attach a door glass fastening holder to automotive glass. Conventionally, various types of adhesives such as epoxy, urethane, silicon, and modified silicon have been used for mounting the door glass fastening holder.

  Above all, polyurethane adhesives containing polyurethane as a main component and blended with plasticizers, fillers, pigments, etc. are used as joint fillers, sealing materials, adhesives and coating materials, and also bond automobile glass and automobile bodies. Widely used for direct glazing. Polyurethane adhesives used in such applications are moisture-curable adhesives, and are classified into one-pack type and two-pack type. In both cases, the crosslinking reaction proceeds due to the moisture in the air, and is cured.

  The moisture-curing adhesive has a very slow curing speed in a low temperature state in winter and requires several days for cross-linking to be concluded. In particular, the tendency of one-component polyurethane adhesive is remarkable. As a method of accelerating the curing of such a moisture-curable adhesive, there is known a method of placing the adhesive in a high-temperature curing room. However, in order to obtain strength that does not cause a problem in practical use, it takes 15 hours or more even in an environment where the temperature is 30 to 40 ° C. and the relative humidity is 55 to 60% RH, and the adhesive is completely cured. This requires 72 hours or more even in the aforementioned environment. Therefore, it is difficult to dramatically improve the efficiency of the step of curing the adhesive.

  Also, for more than 15 hours, a relatively large area was needed to store automotive glass. For this reason, it is necessary to provide a wide storage area at a location remote from the production line, and there is a problem that the number of transportation steps increases in the production of automotive glass. Further, in order to cure the adhesive, facilities such as a curing room for controlling humidity and the like are required, and a large capital investment is required.

  In recent years, using a one-component thermosetting adhesive or an adhesive whose curing is accelerated by heat regardless of one or two components, the curing and drying process after bonding has been shortened, resulting in high efficiency and space saving. As a technique for enabling the production of a rubber, a technique for promoting the curing of an adhesive by using superheated steam has been developed (Patent Document 1 and the like).

  These automotive glass, especially door glass, has a door glass fastening holder having a U-shaped cross section bonded by an adhesive. However, since the only part that supplies heat to the door glass is the part of the holder for fastening the door glass, a large-sized conveyor line as in Patent Document 1 requires a large amount of energy. Furthermore, since such a conveyor line generally uses a belt conveyor made of a heat-resistant metal, there is a risk that the metal and the glass come into contact with each other and cause secondary problems such as scratching of the glass. there were.

JP-A-2002-69390

  The present invention provides a method for manufacturing a member-equipped automotive glass having a U-shaped cross section with high efficiency and space saving, and providing a superheated steam chamber used for manufacturing a member-equipped automotive glass having a U-shaped cross section. Make it an issue.

  The present inventors have found that an adhesive can be cured in a short time by a specific method to produce an automotive glass with a member, particularly an automotive glass with a holder for fastening a door glass, and have completed the present invention.

  That is, the present invention provides a method for producing a member-equipped automotive glass and a superheated steam chamber used for producing a member-equipped automotive glass described in the following items 1 to 10.

Item 1. A superheated steam chamber for curing an adhesive for attaching an adherend having a U-shaped cross section to an edge of an automotive glass,
A body having a groove capable of covering the edge of the automotive glass with the adherend;
A superheated steam chamber provided on both sides of the groove with the groove interposed therebetween, and a superheated steam jetting section for jetting superheated steam toward the groove.

  Item 2. 2. The superheated steam chamber according to the above item 1, wherein the groove is open downward.

  Item 3. Item 3. The superheated steam chamber according to item 1 or 2, wherein an air curtain and / or a covering curtain is provided in the opening of the main body.

Item 4. An adherend having a U-shaped cross section is attached to the edge of the glass for an automobile using an adhesive, and the adhesive is cured using a superheated steam generator, whereby the adherend is made of the glass for an automobile. A method for producing a member-equipped automotive glass, which is bonded to
The superheated steam generator includes a boiler section for generating steam, a superheater for superheating steam generated in the boiler section, and the first section for ejecting superheated steam supplied from the superheater. And a superheated steam chamber according to any one of (1) to (3),
The step of curing the adhesive,
Covering the edge of the automotive glass with the adherend in the groove of the superheated steam chamber;
Spraying superheated steam from both sides of the glass for the vehicle to the adherend from the superheated steam jetting section.

Item 5. The superheated steam chamber includes a heater,
Item 5. The manufacturing method according to Item 4, wherein the temperature of the heater is 120 to 400 ° C.

  Item 6. The manufacturing method according to the above item 4 or 5, wherein the superheated steam is blown for 10 to 120 seconds.

  Item 7. Item 7. The method according to any one of Items 4 to 6, wherein the pressure of the steam supplied to the superheater is 0.1 to 0.3 MPa.

  Item 8. The adherend is at least one selected from the group consisting of polyetherimide, polybutylene terephthalate, polyethylene terephthalate, polycarbonate, 6-nylon, polyamide represented by 66-nylon, polyacetal, polyethylene, polypropylene, ABS, and AES. 8. The production method according to any one of the above items 4 to 7, wherein the production method is a member.

  Item 9. Item 9. The method according to any one of Items 4 to 8, wherein the adhesive includes a two-part modified silicone / epoxy adhesive one-part curing urethane adhesive and / or a two-part urethane adhesive.

  Item 10. Item 10. The method according to any one of Items 4 to 9, wherein a primer is applied to the adhesion surface of the adherend and / or the adhesion surface of the glass for automobiles.

  ADVANTAGE OF THE INVENTION According to this invention, an adhesive can be hardened | cured in a short time, without requiring large-scale equipment, and a great reduction in energy cost and work in the bonding process of a member having a U-shaped cross section to glass for automobiles. Space efficiency can be improved. As a result, it is possible to incorporate a bonding process of a member having a U-shaped cross section to the glass for automobiles as a part of the automobile production line, and it is possible to increase the efficiency of automobile production. Furthermore, according to the present invention, stable quality can be maintained irrespective of the difference in curvature of automotive glass and the size and shape of parts to be bonded.

It is a block diagram showing composition of a superheated steam generator of the present invention. It is a perspective view which shows the structure of the superheated steam chamber in the superheated steam generator of FIG. FIG. 3 is a side view of the superheated steam chamber in FIG. 2. It is a side view which shows the covering curtain provided in the opening of the superheated steam chamber of FIG. It is a side view which shows the air curtain provided in the opening of the superheated steam chamber of FIG. It is a perspective view showing other embodiments of the superheated steam room of the present invention. It is a perspective view showing other embodiments of the superheated steam room of the present invention. It is a perspective view showing other embodiments of the superheated steam room of the present invention. It is a front view showing one embodiment of glass for vehicles with members of the present invention. It is a front view which shows other embodiment of the glass for vehicles with members of this invention. It is a front view which shows other embodiment of the glass for vehicles with members of this invention. It is a perspective view showing one embodiment of an adherend of the present invention. It is a perspective view showing other embodiments of an adherend of the present invention. It is a perspective view which shows the process of sticking the glass for vehicles of this invention and an adherend.

1. Superheated steam generator 1 The superheated steam generator 1 according to the present invention is a device for curing an adhesive for attaching an adherend 21 having a U-shaped cross section to an edge portion 20a of an automotive glass 20. As shown in FIG. 1, a superheated steam generator 1 includes a boiler section 2 for generating steam, a superheater 3 for superheating steam generated in the boiler section 2, and a superheated steam supplied from the superheater. And a superheated steam chamber 10 for jetting out and curing the adhesive. The superheater 3 is provided in connection with the boiler unit 2, and the superheated steam chamber 10 is provided in connection with the superheater 3. As the boiler unit 2 and the superheater 3, any known boiler and superheater are used.

1.1. Superheated steam chamber As shown in FIGS. 2 and 3, the superheated steam chamber 10 includes a main body 11, a superheated steam jetting section 12 and a heater 13 provided inside the main body 11. 2 and 3, a cover curtain 16 or an air curtain 43, which will be described later, is omitted for easy understanding of the opening 11a of the main body 11. Hereinafter, when viewed in FIG. 2, the vertical direction is defined, and the front-rear direction is defined with the near side (the side on which the vehicle glass 20 and the like are shown) in FIG. The direction perpendicular to the up-down direction and the front-back direction is defined as the left-right direction.

  The main body 11 has a hollow box shape. The material of the main body 11 may be stainless steel or the like from the viewpoint of corrosion resistance. The main body 11 is formed with a groove 111 capable of covering the edge 20 a of the automotive glass 20 together with the adherend 21. The groove 111 is open downward on the lower surface of the main body 11 and is recessed upward. The groove 111 is provided substantially at the center of the main body 11 in the left-right direction, and extends in the front-rear direction so as to penetrate to both side surfaces of the main body 11. When the groove 111 is opened downward, water droplets generated in the superheated steam chamber 10 due to the superheated steam drop by their own weight outside the superheated steam chamber 10 and do not accumulate in the superheated steam chamber 10. It is possible to prevent the adhesive that bonds the substrate and the adherend 21 from being wetted by water droplets.

  The superheated steam jetting sections 12 are arranged on both sides (left and right sides) of the groove 111 so as to extend in the front-rear direction. In the present embodiment, the superheated steam jetting section 12 has a tubular shape, and four superheated steam jetting sections 12 are arranged on the left and right sides at an interval vertically. The four superheated steam jetting portions 12 on the left and right are two pairs each from the top, and one end (front end) of the set of superheated steam jetting portions 12 is a U-shaped tube inside the main body 11. Are linked by Further, the other end (rear end) of the set of superheated steam jetting portions 12 is exposed from the side surface of the main body 11, and the other end of the set of superheated steam jetting portions 12 is Y-shaped outside the main body 11. It is connected to the fork of the tube. The superheated steam jetting section 12 is connected to the superheater 3 via this Y-shaped tube, and superheated steam from the superheater 3 is supplied to a set of superheated steam jetting sections 12. The superheated steam jetting section 12 is formed with a jet port 121 for jetting superheated steam supplied from the superheater 3 into the superheated steam chamber 10. The ejection port 121 has an arbitrary shape, and is open to the groove 111 side. A plurality of the ejection ports 121 are provided along the longitudinal direction of the superheated steam ejection section 12.

  The heater 13 is arranged on the side of the superheated steam ejection section 12 where the ejection port 121 is provided (on the side of the groove section 111). The heater 13 is also provided above the groove 111. The heater 13 has a tubular shape and has a length that can be accommodated in the main body 11. In the present embodiment, four heaters 13 are provided on each of the left and right sides and extend in the front-rear direction in parallel with the superheated steam jetting section 12, and three heaters 13 are provided above the groove 111 in the front-rear direction. ing. As the heater 13, for example, a sheathed heater is used. By providing the heater 13, the temperature inside the superheated steam chamber 10 can be maintained, and at the same time, the temperature of the superheated steam jetted from the jet port 121 can be maintained by being provided on the side where the jet port 121 opens.

  An exhaust pipe 14 communicating with the inside of the main body 11 is provided on the upper surface of the main body 11. By the exhaust pipe 14, the steam filling the inside of the main body 11 can be discharged to the outside of the main body 11, and the pressure inside the main body 11 can be adjusted.

  The main body 11 is supported by a pair of legs 15 provided on both left and right sides. The leg 15 holds the main body 11 at a height at which the automotive glass 20 having the adherend 21 attached to the edge 20 a can be inserted into the groove 111. A rail 30 extending in the front-rear direction is provided below the groove 111 between the pair of legs 15, and a pedestal 31 that can run on the rail 30 is provided on the rail 30. The glass for an automobile 20 is conveyed on the rail 30 while being placed on the pedestal 31 and inserted into the superheated steam chamber 10.

  As shown in FIG. 4, a covering curtain 16 is provided in the opening 11 a (see also FIGS. 2 and 3) of the groove 111 on the lower surface and both side surfaces of the main body 11. The covering curtain 16 is composed of a plurality of thin cylindrical or strip-shaped curtain members, and is configured by attaching the plurality of curtain members to the opening 11a in a brush-like manner without gaps. The curtain member is formed by processing a cloth material made of, for example, Teflon (registered trademark), glass fiber coated with Teflon (registered trademark), silicon rubber, aramid fiber, or the like into a thin columnar or strip shape. The covering curtain 16 is attached to a wall surface forming the main body 11, that is, around the opening 11 a on the lower surface and the side surface by attaching an end of the covering curtain 16 by any known means. In this manner, by attaching the covering curtain 16 to the opening 11a of the main body 11, it is possible to prevent the superheated steam in the main body 11 from leaking from the opening 11a to the outside.

  In another embodiment, as shown in FIG. 5, the main body 11 is provided with an air outlet 41 and an air inlet 42 with openings 11a on the lower surface and both side surfaces (see also FIGS. 2 and 3). The air curtain device 40 is attached. The air blown from the air outlet 41 of the air curtain device 40 is sucked into the air inlet 42 of the air curtain device 40, so that the air curtain 43 is generated so as to cover the opening 11a. As described above, by generating the air curtain 43 in the opening 11a of the main body 11, it is possible to prevent the superheated steam in the main body 11 from leaking from the opening 11a to the outside. The air curtain 43 shown in FIG. 5 may be generated on the covering curtain 16 in a state where the covering curtain 16 shown in FIG. 4 is attached to the opening 11a. Thereby, it is possible to more reliably prevent the superheated steam in the main body 11 from leaking to the outside through the opening 11a.

  The above-described superheated steam chamber 10 may be configured such that the groove 111 does not penetrate to both side surfaces of the main body 11 and both side surfaces of the main body 11 are not open. Further, the above-described superheated steam chamber 10 is not limited to the form in which the groove 111 is opened on the lower surface, and the groove 111 may be opened on the side surface or the upper surface of the main body 11. In this case, the superheated steam jetting section 12 and the heater 13 provided inside the main body 11 may be arranged in a positional relationship in which the superheated steam jetting section 12 and the heater 13 are rotated around the opening and closing direction of the groove 111 in accordance with the opening of the groove 111. .

  The above-described superheated steam chamber 10 may be used alone or two in parallel as shown in FIG. 6 so that two adherends 21 can be attached to the automobile glass 20 at a time. You may. Further, as shown in FIG. 7, the main body 11 of the superheated steam chamber 10 is elongated, and the groove 111 is also formed so as to cover two adherends 21 with one superheated steam chamber 10. You may. Further, as shown in FIG. 8, the main body 11 of the superheated steam chamber 10 is elongated, and the groove 111 is also formed to be long, so that the adherend 21 of the automotive glass with three members is formed in one superheated steam chamber 10. It may be possible to cover with.

2. Automotive Glass with Member The automotive glass with member manufactured by the method of the present invention is obtained by bonding an adherend 21 (member) to an automotive glass 20 as shown in FIGS. 9 to 11. More specifically, the adherend 21 is bonded to the automotive glass 20 with an adhesive.

2.1. Automotive Glass In the present invention, the automotive glass 20 is not particularly limited, and includes, for example, a tempered glass for an automobile, a laminated glass using a resin layer such as polyvinyl butyral for an intermediate layer, and the like. it can. Since the method of the present invention can cure the adhesive in a short time without performing excessive heating, it is particularly suitable for the automotive glass 20 in which a problem is caused by excessive heating. For example, in the case of tempered glass, since the surface strength is strengthened by heat-treating the raw glass, when an excessive temperature is applied when bonding the adherend 21 such as a door glass fastening holder, the strength of the glass itself is increased. Will decrease. In the case of laminated glass, a resin such as polyvinyl butyral of the interlayer film is melted and foamed due to excessive overheating, thereby causing problems such as strength deterioration and poor appearance. Therefore, in the method of the present invention in which excessive heating is not performed, the method can be particularly suitably used for automotive glass 20 such as tempered glass and laminated glass.

  Further, the glass 20 for an automobile may be degreased in order to remove dust and oil. Degreasing is usually performed with an organic solvent. The organic solvent used for degreasing is not particularly limited, but is typically a lower alcohol solvent such as methanol, ethanol, or isopropyl alcohol, or a ketone such as acetone or methyl ethyl ketone.

1.2. Adherend In the present invention, the adherend 21 refers to a door glass fastening holder. The shape of the door glass fastening holder 21 is not particularly limited, and may be a form in which an adhesive surface with the vehicle glass 20 is on one side, a U-shaped cross section that wraps around the vehicle glass 20, or two sheets. It may be a divided form. It is particularly preferable that the door glass fastening holder 21 has a U-shaped cross section. The size of the bonding surface is not particularly limited, and can be arbitrarily selected in consideration of the size, weight, and shape of the glass for automobile 20.

  In the present embodiment, as shown in FIG. 12, the door glass fastening holder 21 includes a connecting portion 211 connected to elevating means for moving the vehicle glass 20 up and down, and an edge portion 20 a of the vehicle glass 20 from the connecting portion 211. The bottom wall 212 extends along the (lower surface), the inner wall 213 extends from the bottom wall 212 along the inner surface of the vehicle glass 20, and the outer wall of the vehicle glass 20 extends from the bottom wall 212. And an outer wall portion 214 that extends. The inner wall portion 213 and the outer wall portion 214 are provided with a plurality of ribs 215 protruding from a surface facing the vehicle glass 20 and forming a gap between the inner wall portion 213 and the vehicle glass 20 to be filled with an adhesive. . The plurality of ribs 215 extend in the vertical direction in FIG. The center of the upper portion of the outer wall portion 214 is an adhesive filling portion. By filling this portion with the adhesive, the thickness of the adhesive accumulated between the outer glass portion 20 and the automobile glass 20 is reduced by a plurality of ribs 215. Can be larger than the height of

  The clearance between the vehicle glass 20 and the door glass fastening holder 21, that is, the thickness of the adhesive is preferably 0.1 mm to 3.0 mm, and particularly preferably 0.2 mm to 1.0 mm. When the thickness of the adhesive is 0.1 mm or less, the cushioning effect is reduced, which is likely to lead to cracking of the glass for automobile 20. When the thickness of the adhesive exceeds 3.0 mm, the thickness of the adhesive when the glass 20 for automobile is raised and lowered is reduced. Swing occurs. As long as the desired clearance between the automotive glass 20 and the door glass fastening holder 21 can be maintained, the width, the number, and the like of the ribs 215 of the bonding portion of the door glass fastening holder 21 can be arbitrarily selected. .

  As shown in FIG. 13, the inner wall portion 213 and the outer wall portion 214 of the door glass fastening holder 21 may be thinned or have a plurality of through holes 216 in order to improve heat transfer efficiency. .

  The material of the adherend (door glass fastening holder) 21 may be a metal such as steel, stainless steel, or aluminum, but is an engineering plastic such as a polyester resin represented by polybutylene terephthalate or polyethylene terephthalate, a polyamide resin, or a polyacetal resin. Is suitable. Among them, polybutylene terephthalate is most suitable. In order to increase the strength, glass fiber may be included, or an alloy such as ABS or polycarbonate may be used. A specific example of such polybutylene terephthalate is polybutylene terephthalate resin. Polybutylene terephthalate resin is commercially available under the trade name of Julanex from Polyplastics, Novaduran from Mitsubishi Engineering-Plastics, and Toraycon from Toray. The polybutylene terephthalate resin is not limited to this.

  The adherend 21 is molded by known injection molding, but is not particularly limited.

  Prior to bonding, the adherend 21 may be degreased to remove dust and oil from the bonding surface. Degreasing is usually performed with an organic solvent, and lower alcohols such as methanol, ethanol, and isopropyl alcohol, and ketones such as acetone and methyl ethyl ketone are typical, but not limited thereto.

  Further, on the adhesive surface, a synthetic resin, a polyisocyanate composition, etc., may be coated with what is generally called a primer, and may be subjected to physical surface modification such as corona or plasma, There is no particular limitation.

2.3. Adhesive The adhesive of the present invention includes an adhesive whose curing is accelerated by heat. Specific examples include known thermosetting adhesives such as acrylic, epoxy, urethane, silicon, and modified silicon. These adhesives may be one-pack or two-pack. From the viewpoint of use for bonding the glass for automobile 20 and the adherend 21, preferred are two-component modified silicone / epoxy adhesives, one-component thermosetting urethane adhesives, and two-component urethane adhesives that have been used in the past. Further, by changing the shape of the inner wall portion 213 of the door glass fastening holder 21 to a shape without the ribs 215, an acrylic epoxy resin or a reactive phenol resin in which the adhesive is double-sided tape-shaped, A film containing nitrile rubber as a main component can also be used.

2.3.1. Two-part modified silicone / epoxy adhesive Two-part modified silicone / epoxy adhesive contains alkoxysilyl group-containing polymer, curing catalyst for alkoxysilyl group-containing polymer, vinyl polymer, epoxy resin, epoxy curing agent, and inorganic filler Adhesive.

  The alkoxysilyl group-containing polymer has a main chain substantially of a polyoxyalkylene structure, and is selected from the group consisting of a dialkyl monoalkoxysilyl group, a monoalkyl dialkoxysilyl group and a trialkoxysilyl group as the alkoxysilyl group. It is preferable to contain one or more of the above.

  The alkoxysilyl group-containing polymer must have at least one alkoxysilyl group in one molecule, but preferably has two or more alkoxysilyl groups in terms of reactivity. Can be provided with temporary fixing properties. The number of alkoxysilyl groups may be three or four, but if it exceeds five, storage stability is lowered and vibration resistance of the adhesive cured layer is insufficient, which is not preferable. Two to four are optimal.

  The alkoxysilyl group-containing polymer can be used without particular limitation as long as it is a polymer containing an alkoxysilyl group. A preferred main chain structure of the alkoxysilyl group-containing polymer is represented by-(RO) n-. Is a polyoxyalkylene structure. Here, R is an alkylene group such as an ethylene group, a propylene group, an isobutylene group, and a tetramethylene group. In addition, these alkylene groups may be mixed. The molecular weight of the alkoxysilyl group-containing polymer is preferably about 500 to 30,000 as a number average molecular weight (Mn) in view of reactivity and characteristics after the reaction. More preferable Mn is 2000 to 20,000.

  The polymer containing an alkoxysilyl group preferably has, as the alkoxysilyl group, at least one of a dialkylmonoalkoxysilyl group, a monoalkyldialkoxysilyl group, and a trialkoxysilyl group. Alkoxy is methoxy, ethoxy, propoxy and the like. In particular, those containing a monomethyldimethoxysilyl group and a trimethoxysilyl group are preferred. Most preferred polymers containing alkoxysilyl groups are those containing both monomethyldimethoxysilyl and trimethoxysilyl groups. Of course, the alkoxysilyl group-containing polymer may be a mixture of polymers having various alkoxysilyl groups, and a mixture of a silicone polymer having a monomethyldimethoxysilyl group and a silicone polymer having a trimethoxysilyl group may be a mixture of a monomethyldimethoxysilyl group. And an alkoxysilyl group-containing polymer containing both trimethoxysilyl groups.

  In order to obtain a polymer having a polyoxyalkylene structure as a main chain structure and having an alkoxysilyl group, first, diols such as ethylene glycol and propylene glycol; triols such as glycerin and hexanetriol; pentaerythritol, diglycerin and the like It is preferable that a polyol such as sorbitol is reacted with an alkylene oxide such as ethylene oxide or propylene oxide under known conditions to obtain a polyoxyalkylene polymer, and then an alkoxysilyl group is introduced. Preferred polyoxyalkylene polymers are di- to hexavalent polyoxypropylene polyols, especially polyoxypropylene diol and polyoxypropylene triol.

A first method of introducing an alkoxysilyl group into a polyoxyalkylene polymer is to introduce an unsaturated double bond into a terminal hydroxyl group of the polyoxyalkylene polymer, and then introduce a general formula HSi (OR ¹ ) ₂ (R ² ) And / or HSi (OR ¹ ) _{3 wherein} (R ¹ may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R ² represents an alkyl group having 1 to 10 carbon atoms or carbon number. Represents an aryl group of 6 to 20).

  To introduce an unsaturated double bond, a compound having a functional group having reactivity between the unsaturated double bond and a hydroxyl group is reacted with a hydroxyl group of a polyoxyalkylene polymer to form an ether bond, an ester bond, A method of bonding by a urethane bond, a carbonate bond, or the like can be given. When polymerizing the oxyalkylene, a double bond may be introduced into the side chain of the polyoxyalkylene polymer by adding and copolymerizing an allyl group-containing epoxy compound such as allyl glycidyl ether.

  By reacting the above-mentioned hydrosilyl compound with the introduced unsaturated double bond, an alkoxysilyl group-containing polymer having an alkoxysilyl group introduced can be obtained. For the reaction of the hydrosilyl compound, it is recommended to use a platinum-based, rhodium-based, cobalt-based, palladium-based, or nickel-based catalyst. Among them, platinum-based catalysts such as chloroplatinic acid, platinum metal, platinum chloride, and platinum olefin complex are preferable. The reaction of the hydrosilyl compound is preferably performed at a temperature of 30 to 150 ° C, particularly 60 to 120 ° C, for several hours.

A second method for introducing an alkoxysilyl group into a polyoxyalkylene polymer is to add a general formula R ² —Si (OR ¹ ) ₂ (R ³ NCO) and / or (R ³ NCO) to a hydroxyl group of the polyoxyalkylene polymer. ) Si (OR ¹ ) ₃ (wherein R ¹ and R ² have the same meaning as described above, and R ³ is a divalent hydrocarbon group having 1 to 17 carbon atoms). It is a method of reacting. In this reaction, a known urethanation catalyst may be used. Usually, if the reaction is carried out at a temperature of 20 to 200 ° C., particularly 50 to 150 ° C. for several hours, an alkoxysilyl group-containing polymer can be obtained. A third method for introducing an alkoxysilyl group into a polyoxyalkylene polymer is to react a hydroxyl group of the polyoxyalkylene polymer with a polyisocyanate compound such as tolylene diisocyanate to introduce an isocyanate group, and then formula (R ²⁾ —Si (OR ¹ ) ₂ (R ³ W) and / or (R ³ W) Si (OR ¹ ) ₃ (wherein R ¹ , R ² and R ³ have the same meaning as described above, W is a hydroxyl group, A reactive hydrogen group selected from a carboxyl group, a mercapto group, a primary amino group and a secondary amino group). An alkoxysilyl group-containing polymer can be obtained by the reaction between W and an isocyanate group.

  A fourth method is to introduce an unsaturated double bond into the polyoxyalkylene polymer terminal in the same manner as in the first method, and then react the compound in which W is a mercapto group in the third method. May be used. Examples of such a compound include 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, and the like. At the time of the reaction, a polymerization initiator such as a radical generator may be used, and in some cases, the reaction may be performed by radiation or heat without using a polymerization initiator.

  As the polymerization initiator, peroxide-based, azo-based, redox-based polymerization initiators, metal compound catalysts and the like can be used, and a polymerization initiator having a reactive silicon functional group as a peroxide-based or azo-based polymerization initiator Can also be used. Specific examples include benzoyl peroxide, tert-alkyl peroxyester, acetyl peroxide, diisopropyl peroxycarbonate, 2,2′-azobis (2-isobutyronitrile), 2,2′-azobis (2-methyl Butyronitrile), 2,2'-azobis (2-methyl-4-trimethoxysilylpentonitrile), 2,2'-azobis (2-methyl-4-methyldimethoxysilylpentonitrile) and the like. This fourth reaction is preferably carried out at 20 to 200 ° C., particularly 50 to 150 ° C., for several hours to several tens of hours.

  As the polymer having a polyoxyalkylene structure as a main chain structure and having an alkoxysilyl group, a polymer commercially available as a modified silicone polymer may be used. For example, a product having a terminal structure of a monomethyldimethoxysilyl group may be used. "Silyl SAT200" (manufactured by Kanegafuchi Chemical Industry Co., Ltd.) and the like are available.

  The two-part modified silicone / epoxy adhesive includes a curing catalyst for the polymer containing the alkoxysilyl group. The curing catalyst plays a role in promoting the hydrolysis-condensation polymerization reaction of the alkoxysilyl group. This reaction proceeds only with moisture in the air, but in order to accelerate the progress of the reaction, use of an organotin compound, a metal complex, a basic compound, an organic phosphorus compound, or the like as a curing catalyst is recommended. The amount of the curing catalyst to be used is preferably 0.01 to 10 parts by mass based on 100 parts by mass of the alkoxysilyl group-containing polymer of the two-component modified silicone / epoxy adhesive.

  Specific examples of the organotin compound include dibutyltin dilaurate, dibutyltin dimaleate, dibutyltin phthalate, stannous octylate, dibutyltin methoxide, dibutyltin diacetylacetate, dibutyltin diversate, dibutyltin oxide, dibutyltin oxide, and phthalic acid. Reaction products with a diester and the like can be mentioned. Examples of the metal complex include titanate compounds such as tetrabutyl titanate, tetraisopropyl titanate, and triethanolamine titanate; carboxylic acids such as lead octylate, lead naphthenate, nickel naphthenate, cobalt naphthenate, bismuth octylate, and bismuth versatate Metal salts; metal acetylacetonate complexes such as aluminum acetylacetonate complex and vanadium acetylacetonate complex.

  Examples of the basic compound include aminosilanes such as γ-aminopropyltrimethoxysilane and γ-aminopropyltriethoxysilane; quaternary ammonium salts such as tetramethylammonium chloride and benzalkonium chloride; “Sankyo Air Products” "DABCO (registered trademark)" series, "DABCO BL" series manufactured by the company; linear or cyclic tertiary amines containing plural nitrogens such as 1,8-diazabicyclo [5.4.0] undec-7-ene; And quaternary ammonium salts.

  Examples of the organic phosphorus compound include monomethyl phosphoric acid, di-n-butyl phosphoric acid, and triphenyl phosphate.

  The two-component modified silicone / epoxy adhesive contains a vinyl polymer as an essential component. Although the reason is not clear, this vinyl polymer has an action of accelerating the hydrolysis-condensation polymerization reaction of the alkoxysilyl group. Examples of the monomer forming the vinyl polymer include (meth) acrylic acid; methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, Isobutyl (meth) acrylate, sec-butyl (meth) acrylate, tert-butyl (meth) acrylate, n-hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, dodecyl (meth) acrylate, tetradecyl (meth) acrylate, (Meth) acrylates which are alkyl esters having 1 to 20 carbon atoms such as hexadecyl (meth) acrylate and octadecyl (meth) acrylate; cyclohexyl (meth) acrylate, benzyl (meth) acrylate, phenyl (meth) acrylate TA) acrylate, isobonyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, tert-butylaminoethyl (meth) acrylate, glycidyl (meth) acrylate, tetrahydrofuran (meth) acrylate, allyl (meth) acrylate, 2-hydroxyethyl (Meth) acrylate, hydroxypropyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, trimethylolpropane tri (meth) acrylate, trifluoroethyl (meth) acrylate, trade name of Toagosei Co., Ltd. (Meth) acrylates such as “M-110” and “M-111”, trade names “Veoba 9” and “Veova 10” manufactured by Shell Chemical Company; acrylonitrile, α-methylacrylonitrile; succinic acid 2- (meth) acrylate ) Acryloyloxyethyl, 2- (meth) acryloyloxyethyl maleate, 2- (meth) acryloyloxyethyl phthalate, 2- (meth) acryloyloxyethyl hexahydrophthalate; (meth) acrylamide; (meth) acrylglycidyl Acrylic monomers such as ethers; styrene monomers such as styrene, vinyltoluene, divinylbenzene, α-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, p-ethylstyrene, p-methoxystyrene; 2,4-dicyanob; vinyl group-containing monomers such as vinyl chloride, vinyl acetate, vinyl propionate, vinyl pyrrolidone, vinyl carbazole, vinyl ether, and vinyl glycidyl ether; allyl group-containing monomers such as allyl glycidyl ether; One or more of ten-1, butadiene, isoprene, chloroprene, other olefins or halogenated olefins, unsaturated esters, and the like can be used.

  From the viewpoint of improving the vibration resistance and heat resistance of the adhesive layer, it is preferable to select a monomer having a Tg of the homopolymer of 0 to 200 ° C. As such a monomer, methyl methacrylate, ethyl methacrylate, n- Propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec-butyl methacrylate, tert-butyl methacrylate, n-hexadecyl methacrylate, n-octadecyl methacrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, phenyl (meth) ) Acrylate, isobonyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, tert-butylaminoethyl (meth) acrylate, glycidyl methacrylate, tetrahydrofuran (Meth) acrylate, allyl methacrylate, 2-hydroxyethyl methacrylate, hydroxypropyl methacrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, trimethylolpropane tri (meth) acrylate, trifluoroethyl (meth) acrylate, TOA “M-110” and “M-111” manufactured by Gosei Co., Ltd., “Beoba 9” and “Veoba 10” manufactured by Shell Chemical Company, trifluoroethyl methacrylate, acrylonitrile, 2-methacryloyloxyethyl succinate, 2-methacryloyloxyethyl maleate, 2-methacryloyloxyethyl phthalate, 2-methacryloyloxyethyl hexahydrophthalate, styrene, α-methylstyrene, o-methylstyrene, m-methylstyrene Emissions, p- methyl styrene, p- ethylstyrene, p- methoxystyrene, vinyl chloride, vinyl pyrrolidone, vinyl carbazole, and the like. Among these, one or two or more monomers selected from methyl methacrylate glycidyl methacrylate, acrylonitrile and styrene are preferable, and it is more preferable to use two or more of these monomers in combination.

  In synthesizing the vinyl polymer, an alkoxysilyl group-containing monomer can be used. Specifically, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, vinyltrimethoxysilane, tris (2-methoxyethoxy) vinylsilane And 3- (meth) acryloyloxypropylmethyldimethoxysilane, 3- (meth) acryloyloxypropyltrimethoxysilane, and the like. Among these, 3- (meth) acryloyloxypropylmethyldimethoxysilane and 3- (meth) acryloyloxypropyltrimethoxysilane are preferred. These alkoxysilyl-containing monomers are preferably used in combination with the above-mentioned monomers, and are preferably 0.01 to 10% by mass based on 100 parts by mass of a monomer component for synthesizing a vinyl polymer.

  The vinyl polymer can be obtained by polymerizing the above monomer by a known method such as radical polymerization, anionic polymerization, or cationic polymerization. The polymerization may be performed in the presence of a solvent such as xylene, toluene, acetone, methyl ethyl ketone, ethyl acetate, and butyl acetate. After removing these solvents by a method such as distillation under reduced pressure as necessary after the polymerization, the polymer can be mixed with, for example, an alkoxysilyl group-containing polymer or an epoxy resin, but the solvent distillation step is complicated. A method of polymerizing a monomer component for a vinyl polymer in the presence of the alkoxysilyl group-containing polymer is recommended because a mixture of both can be easily obtained.

  In particular, 2,2′-azobis (2-isobutyronitrile), 2,2′-azobis (2-methylbutyronitrile), 2,2′-azobis (2,4-dimethylvaleronitrile), 2, 2′-azobis (2-methyl-4-trimethoxysilylpentonitrile), 2,2′-azobis (2-methyl-4-methyldimethoxysilylpentonitrile), trade name “VA-” manufactured by Wako Pure Chemical Industries, Ltd. 046B "," VA-057 "," VA-061 "," VA-085 "," VA-086 "," VA-096 "," V-601 "," V-65 "and" VAm-110 ". In the presence of a peroxide-based polymerization initiator such as an azo-based polymerization initiator such as benzoyl peroxide, tert-alkylperoxyester, acetyl peroxide, and diisopropyl peroxycarbonate. Radical polymerization is preferred. At this time, lauryl mercaptan, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropylmethyldimethoxysilane, thio-β-naphthol, thiophenol, n-butylmercaptan, ethylthioglycolate, isopropylmercaptan, t-butylmercaptan, γ -The polymerization may be carried out in the presence of a chain transfer agent such as trimethoxysilylpropyl disulfide.

  Modified silicone polymers, which are a mixture of an alkoxysilyl group-containing polymer and a vinyl polymer, are already known as "ES-GX3406a" (manufactured by Asahi Glass Co., Ltd.), "Silyl MA440", "Silyl MA447", "Silyl MA430" (Manufactured by Kanegabuchi Chemical Co., Ltd.), and these can also be used.

  Two-part modified silicone / epoxy adhesives include epoxy resins and epoxy curing agents. Since the epoxy resin is three-dimensionally cured by the epoxy curing agent, it has a role of improving the heat resistance of the adhesive layer and the adhesive strength to glass. Examples of the epoxy resin include a known bisphenol type epoxy resin; a biphenyl type epoxy resin; an alicyclic epoxy resin; a polyfunctional glycidylamine resin such as tetraglycidylaminodiphenylmethane; a polyfunctional glycidyl ether resin such as tetraphenylglycidyl etherethane; A phenol novolak type epoxy resin, a cresol novolak type epoxy resin and the like can be mentioned, but since epoxy resins of various grades are commercially available, these can be used. From the viewpoint of workability, a bisphenol A type liquid resin having a molecular weight of about 300 to 500 and being liquid at room temperature is preferable.

  The epoxy curing agent is not particularly limited as long as it is a commonly used curing agent. Triethylenetetramine, diethylenetriamine, metaxylylenediamine, metaphenylenediamine, diaminodiphenylmethane, isophoronediamine, 2,4,6-tris ( Amines such as dimethylaminomethyl) phenol; tertiary amine salts; polyamide resins; imidazoles; and compounds such as carboxylic anhydrides such as phthalic anhydride can be used. In particular, for the two-pack modified silicone / epoxy adhesive, it is preferable to use an aliphatic amine-based curing agent which has a relatively fast curing reaction. In addition, a latent curing agent such as ketimine, which has an active amine blocked and is activated by moisture in the air, may be used. The epoxy curing agent is preferably used in an amount of 0.1 to 300 parts by mass with respect to 100 parts by mass of the epoxy resin.

  The inorganic filler adjusts the viscosity and structural viscosity index of the adhesive before curing, acts as a bulking agent, and acts as a reinforcing agent to increase the strength and heat resistance of the adhesive cured layer. As the inorganic filler, powders such as calcium carbonate, silica, titanium dioxide, talc, and mica are preferable. As the calcium carbonate, both colloidal calcium carbonate and heavy calcium carbonate can be used.

  Although each component described above is essentially contained, 1 to 200 parts by mass of the vinyl-based polymer, 30 to 70 parts by mass of the epoxy resin, and 10 to 10 parts by mass of the inorganic filler with respect to 100 parts by mass of the alkoxysilyl group-containing polymer. It is preferable to adjust so as to be in the range of 300 parts by mass. If the amount of the vinyl-based polymer is too small, the action of accelerating the hydrolysis-condensation polymerization reaction of the alkoxysilyl group is not exhibited. If the amount is too large, the excellent vibration resistance of the alkoxysilyl-containing polymer may be impaired. If the amount of the epoxy resin is too small, the final adhesive strength, heat resistance, chemical resistance, etc. of the cured adhesive layer may be insufficient. If the amount is too large, the vibration resistance may be reduced. If the amount of the inorganic filler is too small, the viscosity of the adhesive before curing falls below an intended value, and there is a possibility that inconvenience such as sagging may occur. However, if the amount is too large, the workability deteriorates.

  In such an adhesive, since the curing reaction of the alkoxysilyl group-containing polymer starts due to moisture in the air, it is preferable to mix each component immediately before use. Upon mixing, in order to obtain a stable curing rate regardless of the external environment, it is preferable to avoid contact with moisture in the air, and it is recommended that mixing be performed by shutting off the air with a static mixer or the like, for example. .

  Considering the shortening of the mixing time and the pot life, it is preferable to use a two-component adhesive and mix the two components immediately before use. If the two-component modified silicone / epoxy adhesive is divided into agent A and agent B, for example, an alkoxysilyl group-containing polymer as agent A, a curing catalyst for an alkoxysilyl group-containing polymer as agent B, and an epoxy resin as By separately blending the epoxy curing agent with the agent A in the agent B, the pot life is prolonged. When a commercially available vinyl polymer mixed with an alkoxysilyl group-containing polymer is used, the vinyl polymer is included in the agent A. However, a vinyl polymer may be separately synthesized and blended with the agent B. The inorganic filler may be blended with either the A agent or the B agent, or may be blended with both the A agent and the B agent. It is preferable to mix both the A agent and the B agent so that the A agent and the B agent have the same viscosity, since the mixing of the two can be easily performed. When preparing each of the A agent and the B agent, known mixing means such as a planetary mixer can be employed.

  Such an adhesive is commercially available from Konishi Co., Ltd. under the trade name of MOS (registered trademark) 200 and MOS (registered trademark) 300.

2.3.2 One-part cured urethane adhesive The one-part cured urethane adhesive is not particularly limited, such as an amine-based latent curing agent, a curing catalyst encapsulation, or an isocyanate compound encapsulated in microcapsules, but the latter is more preferable. . The temperature at which the outer shell of the microcapsules dissolves is particularly preferably about 80 to 120 ° C. If the temperature is lower than 80 ° C., the adhesive may deteriorate or change with time during storage in a living environment. If the temperature is higher than 120 ° C., damage to the adherend may occur during curing.

  The polyurethane composition may contain a filler, a plasticizer, an antioxidant, a pigment, a silane coupling agent, a dispersant, a solvent and the like.

  Examples of the filler include calcium carbonate and silica. Calcium carbonate is roughly divided into heavy calcium carbonate and precipitated calcium carbonate, but precipitated calcium carbonate whose surface is treated with a fatty acid ester to prevent the reaction between isocyanate groups and water and improve storage stability. It is preferred that

  The fatty acid ester to be subjected to the surface treatment of calcium carbonate is not limited to both fatty acids and esters constituting the fatty acid ester. For example, stearic acid stearate, stearic acid laurate, palmitic acid stearate, palmitic acid laurate. Esters obtained from monohydric alcohols are also useful. The amount of the fatty acid ester used for the surface treatment is not particularly limited, but is preferably increased or decreased according to the particle size of the calcium carbonate. Generally, about 1 to 20% of the weight of calcium carbonate is used.

  The amount of the precipitated calcium carbonate surface-treated with the fatty acid ester is preferably in the range of 50 to 150 parts by weight based on 100 parts by weight of the urethane polymer.

  Silica has a hydrophilic grade and a hydrophobic grade, and any grade may be used.

  Examples of the plasticizer include dioctyl phthalate (DOP), dibutyl phthalate (DBP), dilauryl phthalate (DLP), dibutyl benzyl phthalate (BBP), dioctyl adipate, diisodecyl adipate, trioctyl phosphate, and tris (chloroethyl) phosphate. , Tris (dichloropropyl) phosphate, propylene glycol adipate polyester, butylene glycol adipate polyester, alkyl epoxystearate, and epoxidized soybean oil, which can be used alone or in combination.

  Antioxidants are organic compounds that have the property of preventing or suppressing the action of oxygen under conditions such as light and heat on various autoxidizing substances. As a radical chain inhibitor, butylhydroxytoluene (BHT) Phenol derivatives such as butylhydroxyanisole (BHA); aromatic amines such as diphenylamine and phenylenediamine; and phosphites such as triphenyl phosphite.

  Pigments include inorganic pigments and organic pigments.Examples of inorganic pigments include metal oxides such as carbon black, titanium oxide, zinc oxide, ultramarine, and red iron, and sulfur substances such as lithopone, lead, cadmium, iron, cobalt, and aluminum. , Hydrochloride, sulfate and the like. Examples of the organic pigment include an azo pigment and a copper phthalocyanine pigment.

As the silane coupling agent, generally, the following formula (1) having a functional group capable of chemically bonding an inorganic material such as glass, silica, metal, or clay and an organic material such as a polymer, which are not easily compatible with each other, is used.
Y to CH ₂ SiX ₃ Formula (1)
(X in the formula is a hydrolyzable substituent such as an alkoxy group, an acetoxy group, an isopropoxy group, an amino group, a halogen, and reacts with an inorganic substance, and Y represents a vinyl group, an epoxy group, an amino group which easily reacts with an organic substance. , A methacryl group, a mercapto group, etc.)
Means an organosilicon compound represented by

  The dispersant refers to a substance that converts solids into fine particles and disperses them in a liquid, and includes sodium hexametaphosphate, condensed sodium naphthalenesulfonate, and a surfactant.

  The composition of the present invention may use a solvent, and preferably uses an aromatic hydrocarbon solvent. The aromatic solvent refers to xylene, toluene and the like.

  Such an adhesive is commercially available from Henkel under the trade name Terolan 1510.

3. Manufacturing Method of Automotive Glass with Member The manufacturing method of the automotive glass with member of the present invention comprises attaching an adherend 21 having a U-shaped cross section to an edge 20a of the automotive glass 20 using an adhesive ( Hereafter, the adherend 21 is adhered to the automotive glass 20 by curing the adhesive using the superheated steam generator 1 (hereinafter, also referred to as “curing step”). . As described above, the superheated steam generator 1 includes the boiler section 2 for generating steam, the superheater 3 for heating the steam generated in the boiler section 2, and the jetting of the superheated steam to cure the adhesive. And a superheated steam chamber 10 having the above-described structure. The curing step includes a step of covering the edge portion 20 a of the automotive glass 20 with the adherend 21 in the groove 111 of the superheated steam chamber 10, and a step of covering the adherend 21 from the superheated steam jetting section 12 from both sides of the automotive glass 20. Spraying superheated steam to the water.

  The automotive glass with members, the adherend (door glass fastening holder) 21, the automotive glass 20, and the adhesive are as described above.

3.1. As shown in FIG. 14, the attaching step refers to a portion of the adherend (door glass fastening holder) 21 having a U-shape, that is, from the inner side wall 213, the outer side wall 214, and the bottom wall 212. This is a step of discharging the above-mentioned adhesive B inside the portion to be formed and inserting the automotive glass 20 between the inner wall portion 213 and the outer wall portion 214 of the adherend 21.

  The method of applying the adhesive B to the bonding surface of the adherend 21 is not particularly limited, and a known method may be used. Examples of the coating method include a one-liquid ejection device, a one-liquid cartridge air gun, a two-liquid mixing device, a two-liquid cartridge air gun, an ink jet coating device, a spray coating, and a brush or brush. For example, in the case of a two-component adhesive, the two-component adhesive B may be discharged onto the adherend 21 and / or the bonding surface of the adherend 21 using a known two-liquid mixing device.

  Before application, the primer P may be applied to the adhesion surface of the adherend 21 and / or the adhesion surface of the automotive glass 20. The application of the primer P may be performed by a known method similarly to the application of the adhesive B.

  As the primer P, a substance generally called a primer such as a polyisocyanate composition or a silane coupling agent may be applied to the adherend 21 and is not particularly limited.

As the silane coupling agent, generally, the following formula (2) having a functional group capable of chemically bonding an inorganic material such as glass, silica, metal, or clay and an organic material such as a polymer, which are poorly compatible with each other, is used.
Y- (CH ₂ ) _n SiX ₃ Formula (2)
(In the formula, X and Y are the same as described above.)
Means an organosilicon compound represented by

  The adhesive B may be applied to one or both of the bonding surface of the adherend 21 (a portion having a U-shape) and the bonding surface of the automotive glass 20. It is preferable to apply the adhesive to the bonding surface of the adherend 21 from the viewpoint that the movable range of the adhesive applying device is suppressed and the size of the adhesive applying device is reduced.

  The application of the adhesive B may be an application to only a part of the bonding surface of the adherend 21 as long as the amount is sufficient to adhere the adherend 21.

The total application amount of the adhesive B can be appropriately changed according to the mass, shape, and the like of the member to be attached to the glass, and is preferably 0.01 to 0.1 g / cm ² .

3.2. Curing Step The curing step is a step of using the superheated steam generator 1 to cure the adhesive B applied in the attaching step.

  The automotive glass 20 having the adherend (door glass fastening holder) 21 adhered to the edge 20a in the attaching step is set on the pedestal 31 such that the adherend 21 is positioned on the upper side. The pedestal 31 runs on the rail 30, and the edge 20 a of the automobile glass 20 and the adherend 21 are inserted into the groove 111 of the superheated steam chamber 10. Thereby, the edge portion 20a of the automotive glass 20 and the adherend 21 are covered with the groove 111 of the superheated steam chamber 10.

  In the superheated steam generator 1, the steam generated in the boiler unit 2 is supplied to the superheater 3, and the superheater 3 generates superheated steam by being superheated by a super heater provided in the superheater 3. I have. The pressure of the steam supplied to the superheater 3 is preferably, for example, 0.1 to 0.3 MPa. In addition, the temperature of the super heater when the steam is superheated in the superheater 3 is preferably 150 to 350 ° C, and particularly preferably 200 to 300 ° C.

  The superheated steam generated by the superheater 3 is supplied into the superheated steam chamber 10 through the superheated steam jetting section 12. The superheated steam jetting section 12 is provided on the surfaces of the grooves 111 facing each other, and the jet port 121 is formed on the surface toward the center of the groove 111, so that the superheated steam jetting section 12 is formed from both sides of the automotive glass 20. Superheated steam is sprayed on the adherend 21. The time for spraying the superheated steam is preferably 10 to 120 seconds, more preferably 10 to 80 seconds, and particularly preferably 30 to 60 seconds. As a result, the adhesive B that has adhered the adherend 21 to the automotive glass 20 is cured.

  A heater 13 is provided in front of the jet port 121 of the superheated steam jetting section 12, and the temperature of the superheated steam jetted from the jet port 121 is maintained by the heater 13. The temperature of the heater 13 is preferably from 120 to 400C, more preferably from 140 to 350C, and particularly preferably from 170 to 250C.

  If necessary, a dry gas can be introduced into the superheated steam jetting section 12 instead of superheated steam.

  According to the present invention, the adhesive B can be cured in a short time by covering only the bonding portion with the superheated steam chamber 10 and spraying superheated steam from both sides. Further, since the adhesive B is hardened by selectively applying superheated steam to the bonding portion, it is possible to avoid a risk of damaging the appearance and the like of the automotive glass 20. Further, since the superheated steam chamber 10 only needs to cover the edge 20a of the automotive glass 20 and the adherend 21, the work can be performed in a smaller space than before, without requiring large-scale facilities. This makes it possible to significantly reduce energy costs and increase the efficiency of a work space in the process of bonding the adherend 21 to the glass for automobile 20. As a result, it is possible to incorporate a step of bonding the adherend 21 to the vehicle glass 20 as a part of the vehicle production line, and it is possible to increase the efficiency of vehicle production. Furthermore, according to the present invention, stable quality can be maintained irrespective of the difference in curvature of the automotive glass 20 and the size and shape of the parts to be bonded.

  As mentioned above, although one Embodiment of this invention of this invention was described, this invention is not limited to this Embodiment, A various change is possible unless it deviates from the meaning.

  Next, the time required for the adhesive B to be cured when manufacturing the automotive glass with a member using the superheated steam generator 1 of the present invention will be verified.

  As the superheated steam generator 1, a superheated steam generator for a test piece manufactured by Naoto Kogyo Co., Ltd. was used. The superheated steam generator 1 includes a boiler section 2 for generating steam, a superheater 3 for superheating steam generated in the boiler section 2, and a superheated steam chamber for blowing superheated steam supplied from the superheater 3 to a target. And 10. The superheated steam chamber 10 includes a superheated steam jetting section 12 having a jet port 121 and a heater 13 arranged on the side where the jet port 121 is opened. The size of the superheated steam chamber 10 is 300 mm in height, 300 mm in width, and 300 mm in depth at the outer edge. The size of the groove 111 into which the test piece can be inserted is 220 mm in height, 30 mm in width, and 300 mm in depth.

Production Example 1
(Molding of polybutylene terephthalate door glass fastening holder)
Using a polybutylene terephthalate resin (manufactured by Polyplastics Co., Ltd., (containing 30% of glass fiber), grade name DURANEX 3300), injection molding was performed by a known method to produce a door glass fastening holder 21. The size of the door glass fastening holder 21 was set to an adhesive area of 45 mm × 12 mm × 2 surfaces and a rib height of 0.5 mm.

Production Example 2
(Preparation of test piece with holder for door glass fastening)
About 1.6 g of a thermosetting urethane adhesive B (manufactured by Henkel, trade name: Terolan 1510) is injected into the center of the door glass fastening holder 21 made of polybutylene terephthalate. A sample (1) was prepared by adhering to a piece (thickness: 4 mm, area: 100 × 100 mm).

  As the primer P, TEROSTAT-8521 was used for the door glass fastening holder 21 and TEROSTAT-8617H (both made by Henkel) was used for the automotive glass 20.

Example 1
The test piece with a holder for fastening a door glass manufactured in Production Example 2 was cured with superheated steam using a superheated steam generator 1 manufactured by Naoto Kogyo Co., Ltd., and the time required for the adhesive to completely cure was determined. At this time, the temperature of the super heater in the superheater 3 was set to 250 ° C., the temperature of the heater 13 in the superheated steam chamber 10 was set to 200 ° C., and the discharge pressure of steam in the boiler unit 2 was 0.2 MPa.

Comparative Example 1
The time required for the adhesive B to be completely cured with the hot air type thermostatic layer set at 100 ° C. was determined for the test piece with the holder for fastening the door glass manufactured in Production Example 2.

Comparative Example 2
The time required for the adhesive B to be completely cured with the hot air type thermostatic layer set at 200 ° C. was determined for the test piece with the holder for fastening a door glass manufactured in Production Example 2.

Production Example 3
(Preparation of test piece with holder for door glass fastening)
About 1.6 g of a moisture-curable urethane adhesive B (manufactured by Yokohama Rubber Co., Ltd., trade name: Hamatite WS-292A) is injected into the center of the above-mentioned door glass fastening holder 21 made of polybutylene terephthalate. A sample (2) was prepared by adhering to a test piece (thickness: 4 mm, area: 100 × 100 mm) of the same material.

Comparative Example 3
The test piece with a holder for fastening a door glass manufactured in Production Example 3 was cured in a constant-temperature and constant-humidity layer set at a temperature of 40 ° C. and a humidity of 60% RH, and the time required for the adhesive surface B to be completely cured was determined.

  The results of Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 3 are shown below. As shown below, in Example 1, it can be seen that the time until the adhesive B was completely cured was extremely short.

DESCRIPTION OF SYMBOLS 1 Superheated steam generator 2 Boiler part 3 Superheater 10 Superheated steam chamber 11 Main body 11a Opening 111 Groove section 12 Superheated steam jetting part 16 Coating curtain 20 Automotive glass 20a Edge 21 Adhered body 43 Air curtain

Claims (6)

A superheated steam chamber for curing an adhesive for attaching an adherend having a U-shaped cross section to an edge of an automotive glass,
A body having a groove capable of covering the edge of the automotive glass with the adherend;
A superheated steam chamber provided on both sides of the groove with the groove interposed therebetween, and a superheated steam jetting section for jetting superheated steam toward the groove.   The superheated steam chamber according to claim 1, wherein the groove opens downward.   The superheated steam chamber according to claim 1, wherein an air curtain and / or a covering curtain is provided at an opening of the main body. An adherend having a U-shaped cross section is attached to the edge of the glass for an automobile using an adhesive, and the adhesive is cured using a superheated steam generator, whereby the adherend is made of the glass for an automobile. A method for producing a member-equipped automotive glass, which is bonded to
2. The superheated steam generator, wherein a boiler section for generating steam, a superheater for superheating steam generated in the boiler section, and a section for ejecting superheated steam supplied from the superheater. And a superheated steam chamber according to any one of (1) to (3),
The step of curing the adhesive,
Covering the edge of the automotive glass with the adherend in the groove of the superheated steam chamber;
Spraying superheated steam from both sides of the glass for the vehicle to the adherend from the superheated steam jetting section. The superheated steam chamber includes a heater,
The manufacturing method according to claim 4, wherein the temperature of the heater is 120 to 400C.   The method according to claim 4, wherein the superheated steam is blown for 10 to 120 seconds.

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